In the course of his five-and-a-half-year presidency, beginning in 1969, Nixon launched and managed five successive and overlapping wars — against the anti-Vietnam War movement, the news media, the Democrats, the justice system and, finally, against history itself. All reflected a mind-set and a pattern of behavior that were uniquely and pervasively Nixon’s: a willingness to disregard the law for political advantage, and a quest for dirt and secrets about his opponents as an organizing principle of his presidency.